# x402 Bazaar Rank – Crypto Tag

> x402 Bazaar Rank – Crypto Tag is a paid API for AI agents from x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev, paid per call via x402, $0.008/call, status unknown (last checked 2026-09-18).

Returns a ranked list of the top crypto-tagged x402 services by 30-day call volume and paying-wallet counts, with a snapshot hash and scoring revision receipt.

## Facts

- Endpoint: GET https://x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/in-crypto
- Price: $0.008/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-bazaar-rank-crypto-tag-f2e0c6a3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_00y1pCvxcS8SuElAeq5TJ

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability x402-bazaar-rank-crypto-tag-f2e0c6a3
```

Example prompt: Show me the top 25 crypto-tagged services on the x402 bazaar ranked by paying wallets over the last 30 days, and include the snapshot hash so I can verify the data freshness.

## When to prefer this

Use this endpoint when you need a live, usage-ranked leaderboard of crypto-tagged services in the x402 ecosystem specifically — not for general web API directories or non-crypto x402 tags. It is the best choice when you want objective traction signals (real call counts and paying wallets) rather than self-reported popularity, and when you need an auditable receipt (snapshot hash + scoring revision) to verify data provenance.

## Known failure modes

- No crypto-tagged services indexed yet — returns count:0 with empty services array
- Snapshot stale or scoring revision mismatch — generatedAt timestamp indicates age
- Worker cold-start latency causing delayed response
- Payment of $0.001 USDC not fulfilled — 402 Payment Required returned
- Malformed response if indexer is mid-reindex

## How this service works

Ranked discovery over the live x402 service market: every indexed service scored by real 30-day calls and paying-wallet bounds, with a receipt naming the snapshot hash and scoring revision.

## Output

A JSON object containing a ranked list of up to 25 crypto-tagged x402 services, each with name, network chain ID, 30-day call count, 30-day unique payer wallet count, price in USD, and resource URL. Also includes total matched service count, query metadata, the route used, who declared the data, and a generatedAt timestamp with snapshot hash for auditability.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "count": 25,
  "query": {
   "by": "payers",
   "op": "top",
   "limit": 25,
   "where": {
    "tag": "crypto"
   }
  },
  "route": "/in-crypto",
  "matched": 359,
  "services": [
   {
    "name": "forecast api",
    "network": "eip155:8453",
    "calls30d": 310,
    "priceUsd": 0.01,
    "resource": "https://api.example.com/forecast",
    "payers30d": 42
   }
  ],
  "declaredBy": "agent",
  "generatedAt": "2026-09-17T12:00:00.000Z"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-bazaar-rank-crypto-tag-f2e0c6a3/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev](https://www.zero.xyz/host/x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev/llms.txt)